Operating Power Supplies in Series

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Though some customers are nervous about working power provides in sequence, it is not uncommon follow in the trade. The profit is that voltages higher than 60V could be obtained utilizing off-the-shelf merchandise.

It's attainable to attach a number of power provides in sequence, however please learn the precautionary notes beneath:

  • Join back-biased diodes throughout the power provide terminals as proven beneath.

Charge these diodes on the identical output present because the power provides.

Within the occasion each power provides don't flip on on the identical time, or if the load turns into a brief circuit, then the diodes will shield the power provides from any utilized reverse voltage.

  • Don't exceed the output to floor/chassis voltage ranking. Inside most power provides are noise filter capacitors related from the output to floor. It's attainable to exceed the working voltage of these capacitors, notably when configuring a number of models in sequence.
  • Keep away from utilizing “fold-back model” present restricted power provides as these could lock up the power provide throughout preliminary swap on.